Question

1. 20 + 5 = \frac{4}{5}x + \frac{1}{2}x

Explanation:

Step1: Simplify left side

$-20 + 5 = -15$

Step2: Combine x terms on right

$\frac{4}{5}x + \frac{1}{2}x = \frac{8}{10}x + \frac{5}{10}x = \frac{13}{10}x$

Step3: Isolate x variable

$-15 = \frac{13}{10}x$
$x = -15 \times \frac{10}{13}$

Step4: Calculate final value

$x = -\frac{150}{13}$

Answer:

$x = -\frac{150}{13}$